<template>
  <div>
    <el-form
        :rules="rules"
        ref="loginForm"
        :model="loginForm"
        class="loginContainer"
        v-loading="loading"
        element-loading-text="登录中..."
        element-loading-spinner="el-icon-loading"
        element-loading-background="rgba(0, 0, 0, 0.8)">
      <h3 class="loginTitle">系统登录</h3>
      <el-form-item prop="username">
        <el-input type="text" auto-complete="false" v-model="loginForm.username" placeholder="请输入用户名"></el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input type="password" auto-complete="false" v-model="loginForm.password" placeholder="请输入密码"></el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input type="text" auto-complete="false" v-model="loginForm.code" placeholder="点击图片更换验证码" style="width: 250px;margin-right: 5px"></el-input>
        <img :src="captchaUrl" @click="updateCaptcha">
      </el-form-item>
      <el-checkbox v-model="checked" class="loginRemember">记住我</el-checkbox>
      <el-button type="primary" style="width: 100%" @click="submitLogin">登录</el-button>
    </el-form>
  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      captchaUrl: "/captcha?time=" + new Date(),
      loginForm: {
        username: "admin",
        password: "123",
        code: ""
      },
      checked: true,
      rules: {
        username: [{required: true,message: "请输入用户名",trigger: "blur"}],
        password: [{required: true,message: "请输入密码",trigger: "blur"}],
        code: [{required: true,message: "请输入验证码",trigger: "blur"}]
      },
      loading: false
    }
  },
  methods: {
    submitLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true
          this.postRequest('/login',this.loginForm).then(resp => {
            //正在加载的loading关闭
            this.loading = false
            if (resp) {
              //存储用户token
              const tokenStr = resp.obj.tokenHead + resp.obj.token
              window.sessionStorage.setItem("tokenStr",tokenStr)
              //登录成功跳转到首页
              // this.$router.replace('/home')
              //页面跳转
              let path = this.$route.query.redirect
              this.$router.replace((path === '/' || path === undefined) ? '/home' : path)
            }
          })
        } else {
          this.$message.error("请输入所有字段！")
          return false;
        }
      })
    },
    updateCaptcha() {
      this.captchaUrl = "/captcha?time=" + new Date()
    }
  }
}
</script>

<style>
  .loginContainer {
    border-radius: 15px;
    background-clip: padding-box;
    margin: 180px auto;
    width: 350px;
    padding: 15px 35px 15px 35px;
    background: #fff;
    border: 1px solid #eaeaea;
    box-shadow: 0 0 25px #cac6c6;
  }
  .loginTitle {
    margin: 0 auto 40px auto;
    text-align: center;
  }
  .loginRemember {
    text-align: left;
    margin: 0 0 15px 0;
  }
  .el-form-item__content {
    display: flex;
    align-items: center;
  }
</style>